I use both. Most of my snakes eat f/t the majority of the time, but I like my snakes to accept both live and f/t, whatever I happen to have available at the time. I do have a few snakes (2 hognose, and 3 bps) that refuse f/t and will only eat live, though on rare occasion (and I do mean very rare occasion) they will take f/t.
On the case of live being "dangerous" or "risky", I have been keeping snakes since 2006 (wow, already 7 years!) and I have only ever had 1 problem feeding live. I have a corn snake that I had been feeding f/t for a long time and hadn't given her live in quite a while. (possibly over a year). She had grown so accustomed to eating f/t that she no longer coiled her prey. Simply grabbed and began wolfing it down. One day I had a live mouse and had no other snakes remaining that would take it, so I put it in her cage. She grabbed it but didn't coil and it reached back and bit her. She had a small, hardly visible wound that went away with a few sheds. She is now fat and happy and eats live and f/t on a regular basis.
